/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:41:39,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:41:39,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:41:39,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:41:39,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:41:39,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:41:39,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:41:39,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:41:39,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:41:39,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:41:39,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:41:39,221 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:41:39,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:41:39,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:41:39,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:41:39,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:41:39,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:41:39,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:41:39,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:41:39,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:41:39,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:41:39,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:41:39,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:41:39,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:41:39,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:41:39,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:41:39,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:41:39,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:41:39,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:41:39,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:41:39,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:41:39,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:41:39,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:41:39,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:41:39,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:41:39,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:41:39,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:41:39,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:41:39,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:41:39,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:41:39,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:41:39,283 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 06:41:39,328 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:41:39,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:41:39,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:41:39,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:41:39,330 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:41:39,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:41:39,331 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:41:39,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:41:39,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:41:39,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:41:39,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:41:39,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:41:39,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:41:39,332 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:41:39,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:41:39,333 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:41:39,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:41:39,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:41:39,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:41:39,333 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:41:39,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:41:39,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:41:39,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:41:39,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:41:39,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:41:39,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:41:39,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:41:39,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:41:39,335 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:41:39,335 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:41:39,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:41:39,841 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:41:39,846 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:41:39,848 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:41:39,848 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:41:39,849 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-09-25 06:41:39,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fac19abd7/f219d758405c4bcd861546e789c5c08a/FLAG785ce599b [2020-09-25 06:41:40,610 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:41:40,615 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-09-25 06:41:40,628 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fac19abd7/f219d758405c4bcd861546e789c5c08a/FLAG785ce599b [2020-09-25 06:41:40,820 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fac19abd7/f219d758405c4bcd861546e789c5c08a [2020-09-25 06:41:40,835 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:41:40,841 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:41:40,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:41:40,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:41:40,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:41:40,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:41:40" (1/1) ... [2020-09-25 06:41:40,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5783693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:40, skipping insertion in model container [2020-09-25 06:41:40,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:41:40" (1/1) ... [2020-09-25 06:41:40,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:41:40,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:41:41,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:41:41,395 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:41:41,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:41:41,677 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:41:41,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:41 WrapperNode [2020-09-25 06:41:41,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:41:41,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:41:41,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:41:41,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:41:41,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:41" (1/1) ... [2020-09-25 06:41:41,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:41" (1/1) ... [2020-09-25 06:41:41,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:41" (1/1) ... [2020-09-25 06:41:41,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:41" (1/1) ... [2020-09-25 06:41:41,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:41" (1/1) ... [2020-09-25 06:41:41,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:41" (1/1) ... [2020-09-25 06:41:41,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:41" (1/1) ... [2020-09-25 06:41:41,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:41:41,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:41:41,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:41:41,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:41:41,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:41:41,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:41:41,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:41:41,918 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:41:41,918 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:41:41,918 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:41:41,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:41:41,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:41:41,919 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:41:41,919 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:41:41,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:41:41,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:41:43,283 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:41:43,283 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:41:43,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:41:43 BoogieIcfgContainer [2020-09-25 06:41:43,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:41:43,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:41:43,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:41:43,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:41:43,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:41:40" (1/3) ... [2020-09-25 06:41:43,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501e69ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:41:43, skipping insertion in model container [2020-09-25 06:41:43,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:41" (2/3) ... [2020-09-25 06:41:43,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501e69ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:41:43, skipping insertion in model container [2020-09-25 06:41:43,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:41:43" (3/3) ... [2020-09-25 06:41:43,303 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label05.c [2020-09-25 06:41:43,315 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:41:43,327 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:41:43,349 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:41:43,384 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:41:43,384 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:41:43,384 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:41:43,385 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:41:43,385 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:41:43,385 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:41:43,385 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:41:43,385 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:41:43,419 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 06:41:43,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 06:41:43,442 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:43,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:43,444 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:43,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:43,452 INFO L82 PathProgramCache]: Analyzing trace with hash 576098423, now seen corresponding path program 1 times [2020-09-25 06:41:43,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:43,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485969589] [2020-09-25 06:41:43,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:43,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:44,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:44,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:45,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:46,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:48,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:48,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:48,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:48,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:48,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 06:41:48,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:41:48,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 06:41:48,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:48,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:48,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:41:48,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:41:48,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 06:41:48,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 06:41:49,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:49,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:49,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:49,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:41:49,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:49,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 06:41:49,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:49,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:49,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:41:49,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:49,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:41:49,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:49,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:41:49,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485969589] [2020-09-25 06:41:49,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:41:49,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:41:49,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346693817] [2020-09-25 06:41:49,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:41:49,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:49,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:41:49,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:41:49,240 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 06:41:51,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:51,614 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 06:41:51,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:41:51,616 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-09-25 06:41:51,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:51,660 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 06:41:51,660 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 06:41:51,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:41:51,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 06:41:51,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 06:41:51,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 06:41:51,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 06:41:51,866 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 122 [2020-09-25 06:41:51,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:51,867 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 06:41:51,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:41:51,867 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 06:41:51,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 06:41:51,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:51,882 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:51,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:41:51,882 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:51,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:51,883 INFO L82 PathProgramCache]: Analyzing trace with hash -329610872, now seen corresponding path program 1 times [2020-09-25 06:41:51,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:51,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697286252] [2020-09-25 06:41:51,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:51,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:52,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:52,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:53,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:53,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 06:41:53,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:41:53,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1984 [2020-09-25 06:41:53,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:53,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:53,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:41:53,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:41:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 06:41:53,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 06:41:54,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:54,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:54,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:54,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:41:54,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:54,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:41:54,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:54,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:54,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:54,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:54,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:54,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:54,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:41:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:54,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:54,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:54,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:41:54,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:54,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:41:54,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:54,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:54,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:41:54,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:54,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:41:54,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:54,300 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:41:54,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697286252] [2020-09-25 06:41:54,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:54,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:41:54,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697881543] [2020-09-25 06:41:54,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:41:54,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:54,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:41:54,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:41:54,305 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 5 states. [2020-09-25 06:41:56,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:56,431 INFO L93 Difference]: Finished difference Result 1654 states and 2024 transitions. [2020-09-25 06:41:56,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:41:56,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-09-25 06:41:56,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:56,438 INFO L225 Difference]: With dead ends: 1654 [2020-09-25 06:41:56,438 INFO L226 Difference]: Without dead ends: 1014 [2020-09-25 06:41:56,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:41:56,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-09-25 06:41:56,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 950. [2020-09-25 06:41:56,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-09-25 06:41:56,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1142 transitions. [2020-09-25 06:41:56,478 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1142 transitions. Word has length 143 [2020-09-25 06:41:56,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:56,479 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1142 transitions. [2020-09-25 06:41:56,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:41:56,479 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1142 transitions. [2020-09-25 06:41:56,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 06:41:56,486 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:56,487 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:56,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:41:56,487 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:56,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:56,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1723591899, now seen corresponding path program 1 times [2020-09-25 06:41:56,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:56,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494852224] [2020-09-25 06:41:56,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:56,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:56,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:57,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:57,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:57,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:01,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:01,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 06:42:01,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:42:01,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:42:01,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:01,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:01,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:01,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 06:42:01,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:42:01,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:01,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:01,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:01,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:01,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:01,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:01,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:42:01,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:01,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:01,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:01,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:01,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:01,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:01,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:01,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:01,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:01,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:42:01,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:01,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:42:01,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:01,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:01,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:01,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:01,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:42:01,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:01,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 06:42:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:01,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:01,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:01,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:42:01,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:01,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 06:42:01,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:01,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:01,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:01,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:42:01,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 06:42:01,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:01,804 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:42:01,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494852224] [2020-09-25 06:42:01,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:01,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:42:01,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305849616] [2020-09-25 06:42:01,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:42:01,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:01,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:42:01,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:42:01,816 INFO L87 Difference]: Start difference. First operand 950 states and 1142 transitions. Second operand 7 states. [2020-09-25 06:42:04,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:04,590 INFO L93 Difference]: Finished difference Result 3199 states and 4128 transitions. [2020-09-25 06:42:04,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:42:04,591 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-09-25 06:42:04,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:04,606 INFO L225 Difference]: With dead ends: 3199 [2020-09-25 06:42:04,607 INFO L226 Difference]: Without dead ends: 2273 [2020-09-25 06:42:04,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:42:04,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2020-09-25 06:42:04,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 2112. [2020-09-25 06:42:04,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2112 states. [2020-09-25 06:42:04,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 2643 transitions. [2020-09-25 06:42:04,713 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 2643 transitions. Word has length 160 [2020-09-25 06:42:04,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:04,714 INFO L479 AbstractCegarLoop]: Abstraction has 2112 states and 2643 transitions. [2020-09-25 06:42:04,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:42:04,714 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 2643 transitions. [2020-09-25 06:42:04,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 06:42:04,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:04,729 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:42:04,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:42:04,729 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:04,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:04,730 INFO L82 PathProgramCache]: Analyzing trace with hash -2123224051, now seen corresponding path program 1 times [2020-09-25 06:42:04,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:04,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114670239] [2020-09-25 06:42:04,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:04,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:04,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:05,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:05,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:05,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:07,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:08,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:08,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:09,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:09,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 06:42:09,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:42:09,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 06:42:09,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:09,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:09,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:09,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:42:09,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 06:42:09,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:09,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:09,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:09,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:09,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:09,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:09,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:09,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:42:09,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:09,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:09,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:09,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:09,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:09,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:09,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:42:09,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:09,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:42:09,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:09,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:09,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:09,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:09,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:42:09,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:09,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 06:42:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:09,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:10,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:10,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:10,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:10,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 06:42:10,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:10,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:10,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:42:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:42:10,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:10,135 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:42:10,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114670239] [2020-09-25 06:42:10,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:10,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:42:10,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430069887] [2020-09-25 06:42:10,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:42:10,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:10,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:42:10,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:42:10,138 INFO L87 Difference]: Start difference. First operand 2112 states and 2643 transitions. Second operand 7 states. [2020-09-25 06:42:12,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:12,520 INFO L93 Difference]: Finished difference Result 4718 states and 6076 transitions. [2020-09-25 06:42:12,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:42:12,521 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2020-09-25 06:42:12,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:12,544 INFO L225 Difference]: With dead ends: 4718 [2020-09-25 06:42:12,544 INFO L226 Difference]: Without dead ends: 2640 [2020-09-25 06:42:12,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:42:12,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2020-09-25 06:42:12,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2310. [2020-09-25 06:42:12,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2310 states. [2020-09-25 06:42:12,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2310 states to 2310 states and 2809 transitions. [2020-09-25 06:42:12,659 INFO L78 Accepts]: Start accepts. Automaton has 2310 states and 2809 transitions. Word has length 174 [2020-09-25 06:42:12,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:12,661 INFO L479 AbstractCegarLoop]: Abstraction has 2310 states and 2809 transitions. [2020-09-25 06:42:12,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:42:12,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2310 states and 2809 transitions. [2020-09-25 06:42:12,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 06:42:12,675 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:12,676 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:42:12,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:42:12,677 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:12,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:12,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1953830612, now seen corresponding path program 1 times [2020-09-25 06:42:12,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:12,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794741467] [2020-09-25 06:42:12,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:12,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:12,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:12,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:13,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:13,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:13,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:13,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:13,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:14,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:16,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:16,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:16,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:17,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:17,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 06:42:17,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 06:42:17,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 06:42:17,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:17,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:17,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:42:17,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 06:42:17,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 06:42:17,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:17,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:17,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:17,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:17,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:17,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:17,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:42:17,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:17,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:17,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:17,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:17,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:17,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:17,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:17,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:17,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:17,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:42:17,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:17,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 06:42:17,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:17,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:17,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:17,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:17,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:42:17,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:17,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 06:42:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:17,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:17,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:18,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:18,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:18,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:42:18,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 06:42:18,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:18,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:18,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:18,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:18,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:42:18,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:18,119 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 06:42:18,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794741467] [2020-09-25 06:42:18,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:18,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:42:18,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813972981] [2020-09-25 06:42:18,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:42:18,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:18,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:42:18,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:42:18,123 INFO L87 Difference]: Start difference. First operand 2310 states and 2809 transitions. Second operand 5 states. [2020-09-25 06:42:20,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:20,012 INFO L93 Difference]: Finished difference Result 6184 states and 7706 transitions. [2020-09-25 06:42:20,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:42:20,013 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-25 06:42:20,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:20,045 INFO L225 Difference]: With dead ends: 6184 [2020-09-25 06:42:20,045 INFO L226 Difference]: Without dead ends: 3908 [2020-09-25 06:42:20,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:42:20,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3908 states. [2020-09-25 06:42:20,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3908 to 3470. [2020-09-25 06:42:20,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3470 states. [2020-09-25 06:42:20,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3470 states to 3470 states and 4327 transitions. [2020-09-25 06:42:20,240 INFO L78 Accepts]: Start accepts. Automaton has 3470 states and 4327 transitions. Word has length 181 [2020-09-25 06:42:20,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:20,241 INFO L479 AbstractCegarLoop]: Abstraction has 3470 states and 4327 transitions. [2020-09-25 06:42:20,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:42:20,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3470 states and 4327 transitions. [2020-09-25 06:42:20,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 06:42:20,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:20,269 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:42:20,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:42:20,269 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:20,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:20,270 INFO L82 PathProgramCache]: Analyzing trace with hash 517236024, now seen corresponding path program 1 times [2020-09-25 06:42:20,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:20,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515565636] [2020-09-25 06:42:20,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:20,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:20,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:20,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:20,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:20,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:20,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:21,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:21,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:23,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:23,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:24,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:25,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:25,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 06:42:25,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 06:42:25,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-09-25 06:42:25,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:25,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:25,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:42:25,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 06:42:25,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 06:42:25,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:25,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:25,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:25,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:25,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:25,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:25,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:42:25,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:25,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:25,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:25,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:25,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:25,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:25,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:25,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:25,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:25,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:42:25,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:25,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 06:42:25,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:25,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:25,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:42:25,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:25,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:42:25,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:42:25,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 06:42:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:25,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:25,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:25,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:42:25,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:25,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 06:42:25,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:25,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:25,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:25,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:42:25,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 06:42:25,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:25,850 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:42:25,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515565636] [2020-09-25 06:42:25,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:25,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:42:25,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526429716] [2020-09-25 06:42:25,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:42:25,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:25,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:42:25,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:42:25,855 INFO L87 Difference]: Start difference. First operand 3470 states and 4327 transitions. Second operand 8 states.